Onan microlite 2500 lp intermittant start

My most common problem with small gas engines in the last 5 or 10 years has been old fuel, water, or deposits in the small carbs. It is gasoline, correct? While I remember warnings on gas freshness going back decades, I have only had the significant problems in the last decade. You may want to spray some carb cleaner through, and that also acts a as quick start substitute. I have been know to use quick start (especially on old cars with carbs and choke problems), but I was warned that using too much can damage the engine (makes sense). The practice of running the fuel out, using fuel stabilizers, and keeping clean carbs is becoming more and more important. My own current task is to get the home back up generator working again after letting fuel sit too long.